Knee sleeve



FIG. 1 is a rear perspective view of the knee sleeve;

FIG. 2 is a rear elevation view of the knee sleeve;

FIG. 3 is a right, side elevation view of the knee sleeve;

FIG. 4 is front elevation view of the knee sleeve;

FIG. 5 is a left, side elevation view of the knee sleeve;

FIG. 6 is a top plan view of the knee sleeve; and,

FIG. 7 is a bottom plan view of the knee sleeve. 

CLAIM The ornamental design for a knee sleeve, as shown and described. 